I have a terminal that a PC can receive and send data with the cable in the diagram attached. now I'd like to replace the PC with an Arduino with a RS232 shield as specified in the other diagram, so far I can send a few bytes over from arudino, but seems not getting any response, looks like the cabling issue, can anybody give me a guidance on cable pin layout that will work in this situation? Thanks,

the link to the rs232 shield is:http://www.wvshare.com/product/RS232-Board.htmI know data got sent to the device from Arduino from the response of the terminal, it printed something every time i sent: Serial.begin(38400);